chore(db): finish Prisma cutover to Drizzle Kit tooling

Move CMS SQL to drizzle/migrations, drop prisma packages/schema, wire drizzle-kit scripts, and regenerate schema names from src/db/schema.ts.

Co-authored-by: Cursor <[email protected]>

drizzle/migrations/0007_login_logs.sql

@@ -0,0 +1,11 @@
+-- Successful-login history (the AtomCMS "session logs" equivalent; our auth is
+-- stateless JWT so there's no sessions table). Idempotent (MariaDB).
+CREATE TABLE IF NOT EXISTS website_login_logs (
+  id         BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+  user_id    INT NOT NULL,
+  ip         VARCHAR(45) NOT NULL,
+  user_agent VARCHAR(512) NULL,
+  created_at TIMESTAMP NULL,
+  PRIMARY KEY (id),
+  KEY website_login_logs_user_id_idx (user_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;